Section 35 in The Dock Workers (Safety, Health And Welfare) Regulations, 1990
35. Opening and closing of hatches .-(1) Hatchways shall be opened sufficiently to allow loads to be safely hoisted or lowered.
(2)No hatch cover or hatch beam shall be removed from or replaced on any hatch unless there is around the hatch coaming an unobstructed working space at least 60 centimeters wide or where this is not reasonably practicable, as wide as is reasonably practicable.(3)Before covering hatch with tarpaulin, it shall be ensured that there is no opening left uncovered by hatch covers and that all the hatch covers are resting securely.
